eBooks de Química, página 5 de 19

Con la intención de continuar en la contribución a la formación académica elemental de los estudiantes en el campo de la termodinámica clásica, se consideró pertinente elaborar un programa accesible de revision experimental basica sobre el tema de equilibrios y transiciones de fases en sistemas monocomponentes.El perfil del trabajo es en forma premeditada eminentemente de caracter metodologico-experimental. Es tarea previa del lector interesado el dominio de los conceptos y fundamentos sobre el tema que aqui se explora. Por tanto, en cada uno de los protocolos que conforman el trabajo aqui presentado, se plantea de inicio el tema, su finalidad, la infraestructura requerida, la tecnica por seguir, el tratamiento de la informacion obtenida (y en su caso la discusion), y el ejemplo-demostracion correspondiente, producto de la realizacion experimental personal por los autores. Cada uno de los protocolos es autocontenido. En la realizacion de los estudios experimentales que aqui se demuestran, se empleo infraestructura experimental verificada previamente tanto en fabrica como, en casos especificos, en laboratorios especializados en la verificacion y certificacion instrumenta

En el Laboratorio de Farmacología II se plantea el desarrollo de procedimientos experimentales y actividades en los que, bajo el principio de las "tres erres", se reduzca, se reemplace y se refine el uso de animales de laboratorio para cubrir los objetivos de la enseñanza experimental de la Farmacologia.

La Farmacología es una ciencia experimental por excelencia. Los métodos utilizados para evaluar la seguridad y la eficacia de los fármacos utilizan sistemas biológicos, que van desde fragmentos celulares o macromoleculas aisladas, hasta poblaciones enteras. En gran parte del proceso de investigacion farmacologica se utilizan animales de laboratorio integros. Sin embargo, la creciente sensibilidad respecto a la practica de la experimentacion en animales en la investigacion y en la enseñanza de las Ciencias Biomedicas, asi como la busqueda de enfoques nuevos en los aspectos practicos de la misma, son parte de un debate actual. Los metodos utilizados en la investigacion, para la evaluacion de la seguridad y/o toxicidad y en la enseñanza estan en continuo progreso, ya que los cientificos estan en permanente busqueda de posibles alternativas que mejoren la calidad de su trabajo. Ello es debido, en parte, a la logica evolucion de los conocimientos cientificos y de sus aplicaciones tecnologicas y, en parte, a consideraciones eticas, logisticas, economicas, sociopoliticas y legales.

La tecnología involucrada en la producción de dulces es muy interesante y un vasto campo de desarrollo para el Químico de Alimentos (QA), ya que requiere de una buena comprensión de la Química, la funcionalidad y las interacciones de los ingredientes, del conocimiento de las operaciones unitarias y tambien de aspectos adicionales como evaluacion sensorial y tecnologia de empaques. De ahi que el programa de este curso contemple una serie de practicas que van de lo mas sencillo a lo mas complejo, tanto en formulaciones como en operaciones.Por ello esperamos que la presente obra sea un apoyo para el aprendizaje del alumnado en esta importante rama de la industria, la cual ademas tiene gran potencial para un desarrollo profesional productivo y eficiente, en particular si se considera que Mexico es uno de los principales productores de azucar, cacao, jarabes y otros ingredientes como vainilla y frutas. Ademas, tiene una tradicion de confiteria artesanal, poco aprovechada a escala industrial.

Química de macrocomponentes de alimentos es un material muy valioso para fortalecer el aprendizaje y fundamentos de los diversos cursos de la licenciatura de Química de Alimentos (QA), porque dirige al estudiante desde la comprension de las cuestiones quimicas y estructurales mas basicas, hasta las mas complejas, sin obviar los detalles de las diferentes etapas de reaccion. Es una referencia para los profesionales que estan en el ambito educativo de otras carreras afines a QA, como Ingenieria de Alimentos, Tecnologia de Alimentos y Nutricion, entre otras.

The MissionThe EC Tech Report "Outdoor Wood Coatings" provides the reader with the basic knowledge to the world of wood coatings as well as the latest developments in wood coatings formulations, explained and presented by the leading coatings (raw material) manufacturers. The articles focus on water-borne and bio-based raw materials for wood coatings to help formulators develop sustainable, environmentally friendly and therefore smaller footprint wood coatings systems. Another focus is on water-vapour permeability, showing how to interpret the measurement data obtained to develop optimum performance for wood coatings. This will enable the research team to implement concrete innovative approaches to develop their own wood coatings for outdoor use and to benefit from the latest findings in coatings development. All this in a very concise and manageable multimedia format.The AudienceThis report is also a valuable resource for new entrants and career changers with a background in chemistry. It provides a clear introduction and a comprehensive overview of current trends in the industry. It is also recommended for professionals to keep abreast of the latest developments and be prepared for future issues.The ValueThe reader receives a quick and reliable overview of a trend topic, compiled by the specialist editorial team of the leading trade coatings technology magazine ECJ and is based on the latest articles. In addition, readers have access to exclusive presentations from the leading congress at the ECS and further relevant EC conferences. As a service for the user: there is no need for lengthy research. The reader receives concrete tips and can thus master his core task, the day-to-day formulation of coatings.

Com uma proposta didática baseada em métodos ativos de ensino-aprendizagem, Para Gostar de Química traz um conjunto de situações diversificadas de ensino, como mapas conceituais, problemas que favore

Podemos definir a la química como una ciencia natural, es decir que emplea metodologías científicas para estudiar algunos fenómenos o propiedades naturales, a los que llamamos fenómenos o propiedades quimicas. Los fenomenos y propiedades quimicas estan determinados por las propiedades de la materia estudiada, pero ademas tratan de conciliar la vision atomico-molecular del fenomeno con el comportamiento macroscopico que resulta de la misma sustancia. Este libro plantea un recorrido por los conceptos basicos para descubrir conjuntamente como pensamos y razonamos desde los atomos, las moleculas y sus interacciones con el mundo que nos rodea. Condensa, con una fuerte carga de trabajo experimental, las bases conceptuales de la Quimica, con especial enfasis en la comprension de casos sencillos para describir sistemas complejos. La vida, los minerales o las estrellas, el medio ambiente, requieren miradas disciplinares diversas, una de las cuales es la molecular y termodinamica. Con estas bases tambien se encaran los desafios sociales y tecnologicos: diseñar y fabricar nuevos materiales, nuevos farmacos, nuevos procesos sustentables, monitorear y remediar la contaminacion existente, preservar la vida en nuestro planeta.

The Mission The EC Tech Report "High-performance Polyurethanes" provides the reader with the basic knowledge to the world of polyurethanes as well as the latest developments in polyurethane coating formulations, explained and presented by the leading coating (raw material) manufacturers. The focus is on bio-based raw materials and isocyanate-free crosslinkers that make PU formulations more environmentally friendly and thus improve the footprint, currently the most important prerequisite for future-proof coating systems. This enables the research team to implement concrete innovative approaches to developing their own polyurethane coatings and to benefit from the latest findings in coating development. All this in a very concise and manageable multimedia format. The Audience Even for newcomers and career changers with a background in chemistry, this report is a valuable resource. It provides a clear introduction and a comprehensive overview of current trends in the industry. It is also recommended for professionals to keep abreast of the latest developments and be prepared for future topics. The Value The reader receives a quick and reliable overview of a trend topic, compiled by the specialist editorial team of the leading trade coatings technology magazine ECJ and is based on the latest articles. In addition, readers have access to exclusive presentations from the leading congress at the ECS and further relevant EC conferences. As a service for the user: there is no need for lengthy research. The reader receives concrete tips and can thus master his core task, the day-to-day formulation of coatings.

Este Livro é um relato de experiência no Ensino de Química em que, além do trabalho protagonista juvenil em apresentações e pesquisas referentes à química orgânica, já no primeiro ano de ensino médio

At present, a highly efficient tool for organic synthesis is the combination of organocatalytic and multicomponent processes. In the organocatalysis reaction it is possible to generate a reactive intermediate with high enantioselectivity and later, in the multicomponent stage, the complexity and structural diversity of the process increases. This strategy allows the synthesis of various analogues of optically active natural compounds and biologically relevant molecules of pharmacological interest, which are essential for human life.The current study, which is divided into three chapters, describes a methodology for the synthesis of tetrasubstituted cliclopentene derivatives from an organocatalytic reaction, followed by a multicomponent Ugi-type reaction under continuous flow regime. The use of green solvents in each reaction step, as well as the adoption of flow chemistry, led to obtaining products with high yield and enantiomerically-enriched in a fast and efficient manner, allowing the development of more sustainable strategies in synthetic chemistry.

Neste livro abrangente e indispensável, mergulhe nas profundezas da engenharia de processos e descubra o coração pulsante da indústria de alimentos e química. Com um foco inigualável nas Operações Un

Nesta obra singular, mergulhe em um universo poético onde a arte encontra a ciência. Este é um livro de poesias ricamente ilustrado, que desvenda os mistérios da bioquímica de maneira única e envolve

Este texto está dividido en tres partes -estructura, reacciones y temas especiales. Por estructura entendemos la forma geométrica tridimensional de las moléculas, la manera de unirse los átomos, las propiedades fisicas, incluyendo los espectros, que dependen de la estructura y nos informan sobre ella, y la distribucion electronica de las moleculas. Existe solo una docena de clases importantes de compuestos organicos, segun se cuente, y quizas otra docena de clases menos importantes. Se estudian las estructuras de todos estos tipos con mas o menos detalle segun su importancia.

Físico-Química é uma unidade do programa do curso de gradução de Química, que indroduz ou desenvolve muitos tópicos distintos. Alguns, como termodinámica e cinética, são prontamente reconhecidos como

In "The History of Chemistry (Vol. 1 & 2)," Thomas Thomson embarks on a meticulous exploration of the evolution of chemistry from antiquity through the early 19th century. His work is characterized by a blend of philosophical inquiry and empirical observation, reflecting the burgeoning intersection of science and society in his time. Thomson elucidates not only the scientific advancements and key figuresAisuch as alchemists, early chemists, and contributors to modern chemical thoughtAibut also the broader intellectual currents that shaped their endeavors. Richly detailed, this scholarly tome serves as a foundational text, charting the disciplines trajectory amidst the cultural and technological shifts of the Industrial Revolution. Thomas Thomson, a noted Scottish chemist and a prominent figure in the scientific community of his era, was deeply influenced by both the Enlightenment ideals and the nascent scientific methodologies that characterized the late 18th and early 19th centuries. His role as a professor and his contributions to the field of chemistry equipped him with a unique perspective, allowing him to critically analyze the historical narratives surrounding the discipline while advocating for its significance. For those intrigued by the origins of modern science, Thomsons "The History of Chemistry" is an indispensable resource. It not only fulfills academic curiosity but also inspires a deeper appreciation for the intricate relationship between chemistry and human progress. Scholars, students, and science enthusiasts alike will find valuable insights within this comprehensive account.

In "The History of Chemistry," Thomas Thomson embarks on a comprehensive exploration of the evolution of chemical science from antiquity to the dawn of the modern era. His meticulous narrative weaves together intricate details about key figures, groundbreaking discoveries, and the philosophical underpinnings that have shaped the discipline. Employing a didactic yet engaging literary style, Thomson incorporates vivid descriptions and historical anecdotes, making complex concepts accessible to a broad audience. This influential text contextualizes the advancements in chemistry within the broader tapestry of scientific inquiry, shedding light on the interconnectedness of various scientific pursuits throughout history. Thomas Thomson, an eminent chemist and historian, was well-placed to undertake this scholarly project, having contributed significantly to the field himself with his research and publications. His firsthand experiences in the laboratory and academia provided him with unique insights into the evolution of chemical thought. Thomsons background in both teaching and research, particularly his role in the establishment of chemical education in Scotland, fueled his passion to document the historical trajectory of chemistry, emphasizing its importance in society and scientific discourse. This book is highly recommended for anyone interested in the development of scientific ideas, for students and scholars alike who wish to gain a deeper understanding of chemistrys rich heritage. Thomsons work serves not only as a historical account but also as an inspiring testament to the relentless pursuit of knowledge, making it a vital addition to the library of any intellectual enthusiast.

Description The new multi-media bundle provides a deep insight into ALTERNATIVES TO BIOCIDES in water-borne coatings with special focus on: - In-can and dry-film preservation: Basic knowledge of preservation in coatings formulations to achieve more environmentally friendly products. - Additives and Fillers: New additives or fillers increase the pH value of the coating to prevent algae growth. - Binder Technology: Making water-borne coatings resistant to microbial spoilage through new binder technologies. - Antimicrobial Coatings: Use of nanomaterials or low-temperature powder coatings to improve antimicrobial surface properties. - Plant Hygiene: Gain new impulses for process-integrated plant cleaning to reduce the use of biocides. In addition, the EC Tech Report includes exclusive market insights, important fundamentals, and an impressive package of digital bonus material.

This is an invaluable work on Boulton and Watt, an early British engineering and manufacturing firm in the business of designing and producing marine and stationary steam engines. It was founded in 1775 as a partnership between the Scottish engineer James Watt and the English manufacturer Matthew Boulton to exploit Watts patent for a steam engine with a different condenser. The firm played a significant role in Industrial Revolution and evolved to be a prominent producer of steam engines in the 19th century. This work was a result of the memoirs of Boulton and Watt. The writer described the formation and evolution of the company as well as details on how they planned and carried out the operations in simple terms. Its a perfect read for people curious to learn about the engineering practices in the olden days.

El químico Vladimir Sánchez, más conocido en redes como Breaking Vlad, nos invita a disfrutar de la química a través de múltiples curiosidades, ejemplos prácticos y un lenguaje cercano que redimen esa materia que tanto nos hizo sufrir en nuestra adolescencia.Todos hemos estudiado los atomos y las moleculas en algun momento de nuestras vidas, pero ¿realmente entendemos lo que nos rodea? Breaking Vlad nos enseña lo que el aprendio siendo niño: todo, absolutamente todo, es quimica. Lamentablemente, es una materia que cae mal y tiene muy mala fama, pero es porque no hemos entendido ni lo que significa ni lo que representa. Vlad nos trasmite su pasion por la quimica para que podamos ilusionarnos y despertar nuestra curiosidad por todo aquello que esta presente a pesar de que no lo podamos ver.